From owner-freebsd-questions Tue Sep 14 6:16:26 1999 Delivered-To: freebsd-questions@freebsd.org Received: from nets5.rz.rwth-aachen.de (nets5.rz.RWTH-Aachen.DE [137.226.144.13]) by hub.freebsd.org (Postfix) with ESMTP id CF6EB15094 for ; Tue, 14 Sep 1999 06:16:18 -0700 (PDT) (envelope-from stolz@Pool.Informatik.RWTH-Aachen.DE) Received: from campino.informatik.rwth-aachen.de (campino.Informatik.RWTH-Aachen.DE [137.226.116.240]) by nets5.rz.rwth-aachen.de (8.9.1a/8.9.1/7) with ESMTP id PAA12360; Tue, 14 Sep 1999 15:16:03 +0200 (MET DST) Received: from solo.informatik.rwth-aachen.de (stolz@solo.Informatik.RWTH-Aachen.DE [137.226.116.103]) by campino.informatik.rwth-aachen.de (8.9.1a/8.9.1/3) with ESMTP id PAA03465; Tue, 14 Sep 1999 15:16:02 +0200 (MET DST) Received: (from stolz@localhost) by solo.informatik.rwth-aachen.de (8.9.1a/8.9.1/1) id PAA00407; Tue, 14 Sep 1999 15:16:01 +0200 (MET DST) Date: Tue, 14 Sep 1999 15:16:01 +0200 From: Volker Stolz To: Greg Lehey Cc: Volker Stolz , freebsd-questions@FreeBSD.ORG Subject: Re: Erratic SCSI-ZIP throughput Message-ID: <19990914151601.A378@solo.informatik.rwth-aachen.de> References: <19990909123919.A6053@solo.informatik.rwth-aachen.de> <19990912114608.U10106@freebie.lemis.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.4i In-Reply-To: <19990912114608.U10106@freebie.lemis.com>; from Greg Lehey on Sun, Sep 12, 1999 at 11:46:08AM +0930 Organization: Temporary exile in Madrid Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sun, Sep 12, 1999 at 11:46:08AM +0930, Greg Lehey wrote: > On Thursday, 9 September 1999 at 12:39:19 +0200, Volker Stolz wrote: > > I always wondered why my ZIP is sooo slow (under FreeBSD, Win98 flies!), so I measured it > > using "ftp localhost" with a mounted ZIP and msdos-FS. > > Few files (all of about 5MB, give or take a few bytes) were transfered with ca. 1.8M/s, > > while most just made it to 80K/s and sometimes even below. > > I'm using the ncr810, everything is properly terminated. The problem occured under 2.2.x, too. > > There's a certain amount of overhead involved in copying a file, and I > suspect that what you're seeing is related, especially if the big > files are moving fast. What does iostat show? I don't know the > specs, but I'd expect about 30 to 50 transfers a second for a Zip > drive. You're right, it shows 48 tps and 0.09 M/s. But hell, that's too slow! At least compared with acceses from Win{NT,98} to the same drive. -- Volker Stolz * stolz@pool.informatik.rwth-aachen.de * PGP To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message